Trump Covid: US president flown to hospital, says 'I think I'm doing very well'

US President Donald Trump has recorded a video message saying he and First Lady Melania Trump are "doing very well".

It was posted on Twitter as he was taken to hospital "out of an abundance of caution", less than 24 hours after testing positive for coronavirus.

Mr Trump walked out of the White House to the Marine One helicopter, which flew him to Walter Reed National Military Medical Centre.

Read more: Trump in hospital after positive coronavirus test